Clover Coverage Report
Coverage timestamp: Sun Mar 23 2008 08:24:39 GMT
13   112   4   2.6
4   28   0.62   5
5     1.6  
1    
 
 
  ConstantNode       Line # 47 13 4 72.7% 0.72727275
 
No Tests
 
1    /*
2    * Copyright (c) 2000-2005, University of Salford
3    * All rights reserved.
4    *
5    * Redistribution and use in source and binary forms, with or without
6    * modification, are permitted provided that the following conditions are met:
7    *
8    * Redistributions of source code must retain the above copyright notice, this
9    * list of conditions and the following disclaimer.
10    *
11    * Redistributions in binary form must reproduce the above copyright notice,
12    * this list of conditions and the following disclaimer in the documentation
13    * and/or other materials provided with the distribution.
14    *
15    * Neither the name of the University of Salford nor the names of its
16    * contributors may be used to endorse or promote products derived from this
17    * software without specific prior written permission.
18    *
19    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22    * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23    * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24    * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25    * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26    * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27    * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28    * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29    * POSSIBILITY OF SUCH DAMAGE.
30    */
31   
32    package issrg.pba.rbac.xmlpolicy.ifstatement;
33   
34    /**
35    * This is the class that represents a Constant node and evaluates the contant
36    * specified
37    * in the policy XML.
38    *
39    * <p>If the policy contains the constant of type for which there is no
40    * constructor provided
41    * by the AEF (not registered with the Types), an EvaluationException will
42    * occur at construction-time.
43    *
44    * @author A.Otenko
45    */
46   
 
47    public class ConstantNode extends TermNode {
48    /**
49    * This is the name of the node that represents the Constant - a static value specified in
50    * the policy.
51    */
52    public final static String CONSTANT_NODE = "Constant";
53   
54    /**
55    * This method should be called to register the node with the XML Parser
56    */
 
57  21 toggle public static void register(){
58  21 try{
59  21 issrg.pba.rbac.xmlpolicy.XMLPolicyParser.registerXMLNode(CONSTANT_NODE, ConstantNode.class);
60    }catch (NoSuchMethodException nsme){
61  0 nsme.printStackTrace();
62    }
63    }
64   
65    protected String type;
66    protected Object value;
67   
 
68  0 toggle protected ConstantNode() {}
69   
70    /**
71    * This constructor builds an ConstantNode, given a XMLPolicyParser and the
72    * set of attributes of this XML element. It expects that a
73    * issrg.pba.rbac.xmlpolicy.XMLTags.TYPE_ATTRIBUTE and
74    * issrg.pba.rbac.xmlpolicy.XMLTags.VALUE_ATTRIBUTE ("Type" and "Value") are
75    * present in this XML element. The value is converted from string into a
76    * Java object using the Types.construct() method, so the type of the value
77    * must be registered there.
78    *
79    * @param p - the XMLPolicyParser that builds this ConstantNode
80    * @param attr - the attributes of this XML element
81    *
82    * @throws EvaluationException, if the value could not be decoded using
83    * available types
84    * @see Types#construct
85    */
 
86  89 toggle public ConstantNode(issrg.pba.rbac.xmlpolicy.XMLPolicyParser p, org.xml.sax.Attributes attr) throws EvaluationException, issrg.pba.rbac.PolicyParsingException{
87  89 super(CONSTANT_NODE, attr, -1, 0);
88   
89  89 type=((String)getAttributes().get(issrg.pba.rbac.xmlpolicy.XMLTags.TYPE_ATTRIBUTE)).intern();
90  0 if (type==null) throw new issrg.pba.rbac.PolicyParsingException(issrg.pba.rbac.xmlpolicy.XMLTags.TYPE_ATTRIBUTE+" attribute was expected in "+CONSTANT_NODE);
91  89 value = getAttributes().get(issrg.pba.rbac.xmlpolicy.XMLTags.VALUE_ATTRIBUTE);
92  0 if (value==null) throw new issrg.pba.rbac.PolicyParsingException(issrg.pba.rbac.xmlpolicy.XMLTags.VALUE_ATTRIBUTE+" attribute was expected in "+CONSTANT_NODE);
93  89 value = Types.construct(type, (String)value);
94    }
95   
96    /**
97    * This method returns the Type of the constant as determined at construction
98    * time.
99    */
 
100  211 toggle public String getType(){
101  211 return type;
102    }
103   
104    /**
105    * This method returns the value of the constant evaluated at construction
106    * time. It doesn't actually throw EvaluationExceptions, but the clause is
107    * kept for subclasses, if there will be any.
108    */
 
109  122 toggle public Object evaluate(Environment env) throws EvaluationException{
110  122 return value;
111    }
112    }